should’ve asked for a sliver of a percentage

I think it's really clear that Rockstar is trying to avoid a repeat of past soundtracks and licensing issues and they want these up-front with no royalty payments to make in the future, so they don't have to keep re-negotiating licensing (and having to remove/replace songs in old games).

I still think this guy was being smart for asking more, even if he asked too much. You're right, he shouldn't have high-balled, but he was smart enough to understand getting a percentage or royalties was probably almost assuredly out of the question.